Mineral-oil vaporizer



' Jan. 29, 1929. 1,700,709

A. E. PEW` JR MINERAL oIL VAPORIZER Original Filed June 19, `1925 Patented Jan. 29,A 1929.

1 A 1,700,709 y UNITED )sra-res 1P.arent4 'Morrisey ARTHUR n. jPEw;VJn., .or BRYNMAWR, ,rnNNsizLvANIA,v AssicfNoR To suNfoiL 'CoM- y Y ,rANY, on PHILADELPHiA, PENNSYLVANIA.' A `conrorusicrioN or rnNNsYLvANIA. v

MINERAL-ori. vAroniznR-Y v Driginal application filed Junev 19, 1925, Serial No..3,184. Divided and this 27, i926. serial No. 91,045.

In an application filed me June 19, 1925,

Serial No. 38,184, of which this application is a division, I set forth an apparatus for the continuous distillation of oil under a high vacuum. Included in the apparatus is a series of stills in each of which is a vaporizing pan that receives oil admitted to the still and extends through the still in an inclined direction over the bodyof oil in the still. PartV of the oilthat travels along the pan is vaporized. The unvaporized Vresidue is discharged rinto the body of oil in the still. y `The invention forming the subject matter of this patent comprisesv the construction and arrangement :of this vaporizing 'contrivance AA preferred embodiment of the invention is shown in the drawings, in which- Fig. 1V is a longitudinal section through'the still withthe internal reinforcing elements inpart omitted to enable vthe vaporizing to be properly illustrated. v Y V Fig. 2 is an enlarged end view ofthe distributing box and the connections therefrom pan ' to the vaporizingpans.

Fig. 3 is a side 'elevation of the parts shown in Fig. 2. Y Fig. 4 is a plan View of the parts shown in Fig. 2. y From the source of supply (which will be from a preceding still unless the tank' is the first of the series) the oil is admittedthrough 'a pipe lb to a distributing box c Vin the upper part, and at one end, of the cylindrical distilling tank a. Boxy c has two partitions d, d, extending lengthwise of the tank andof less height than the side walls of the box'. These partitions form a central chamber e and two side chambers f, f. The oil is admitted to thel central chamber and there, by overflowing the partitions, equally distributes itself into the two side chambers. From the side chambers the oil flows laterally, through pipes g, g, into the upper ends of two long vaporizing pans k, h. A short distance from its upper end each' pan is provided with a Weir t', the space back of the weir forming a secondary feed box y'. Weir i has a corrugated or notched upper edge, over which the oil flows into the pan 7L, which extends nearly the length of the still and down which the oil fiows and from the lower end of which the unvaporized residue discharges into the body of oil in the still.

The oil, in flowing down these pans, spreads over a large surface in a thin layer.

application filed February' This greatly expeditesthe rate of evaporation. Further,'intimate contact is effected betweenthe flowing sheet of oil and the hot vapors from the body of,Y oil in 'the' still.'

Further, the thin sheet of oilvis in contact throughout its entire l area withV hot metal,

between whichand the oil is arapid exchange It has been found, in the voperation ofv stills i equipped with these vaporizing pans, that',l i

there is danger, due tothe foaming of the oil,

ger obviated by enclosing thespace immediately above the pan with'a fine screenl nu A similar screen fn, covers the distributing box c.

The vapors evaporated from the pan h esyture. Foaming is minimized and such dan-` cape through openings arranged along the topV of the tank a into pipes extending to a condenser (not shown). It is important that the vapors leaving the still shall not Contact with the oil admitted to the still.

I claim- 1. The combination, chamber', of an inclinedl oil vaporizing pan extending longitudinally therein, means to supply oil to the upper end of the pan, andl a reticulated cover overlying the pan, the

openings formed by the reticulated ycover bewith an elongated still.l

ing in free communication with thechamber -v Y space outside the cover, thereby allowing free escape of oil vapors while minimizing foaming of the oil and escape of liquid vparticles with the oil vapors from the oil stream during the flow of the oil along the pan.

2. The combination, with an elongated still` chamber, of an oil vdistributing box therein, means to supply oil thereto, two inclined vaporizing pans extending longitudinally through the still chamber, the kupper ends of thepans being on opposite sides of, and

adapted to receive oil from, said box, and

reticulated ycovers overlying .the` distributing 7 box and the pans,`the openings formed by the tion with the chamberspace, thereby allowing free escape of oil vapors while minimizy the oil in the distributing box and from the oil stream flowing along the pans,

3. The combination with an elongated still 10o l reticulated cover `being in free communicachamber7 of a vprimary oil distributing boX therein, overflow partitions therein forming a centraloil receiving compartment and side oil discharge compartments, means to supply i oil kto the central compartment7 secondaryy feed boxes arranged to receive oil from the respective side oil discharge compartments,

- the front Wall of each secondary feed boX y formino' a Weir and two inclined va orizinof .b i p A n c pans Wlth smooth andunmterrupted flow survfaces extending from the respective Weirs longitudinally through the still chamber.

In. testimony lofjwhiohfinverition, Il have hereuntd rset my hand7 at Philadelphial` Pennafon `this 19th day of February, 1926.

l ARTHUR E. PEW, J R.

CERTIFICATE OF CORRECTION.

Patent No. 1,700,709. Granted January 29, 1929, to

ARTHUR E.. PEW, JR.

It is hereby certified `that the State of Incorporation of the assignee in the above numbered patent was erroneously given as "Pennsylvania", whereas said State should have been given as "New Jersey", as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 19th day of February, A. D. 1929.

M. J. Moore,

(Seal) Acting Commissioner of Patents. 

